| Patents for E21B 10 - Drill bits (19,464) |
|---|
| 06/01/2011 | CN102084081A Hydraulic drilling method with penetration control |
| 06/01/2011 | CN102080546A Simple reverse circulation drilling rig |
| 06/01/2011 | CN102080505A Drill bit for swirling water jet drilling |
| 06/01/2011 | CN102080504A Rotary drilling tooth |
| 06/01/2011 | CN101137816B Bit for drilling a hole |
| 06/01/2011 | CA2686066A1 Pdc drill bit with flute design for better bit cleaning |
| 05/31/2011 | US7951213 Superabrasive compact, drill bit using same, and methods of fabricating same |
| 05/31/2011 | US7950476 Drill bit and cutter element having chisel crest with protruding pilot portion |
| 05/31/2011 | CA2601196C Bit leg and cone hardfacing for earth-boring bit |
| 05/30/2011 | CA2723609A1 Enhanced cutter profile for fixed cutter drill bits |
| 05/26/2011 | WO2011062925A2 Down-the-hole drill hammer having a reverse exhaust system and segmented chuck assembly |
| 05/26/2011 | WO2011028427A3 Synergic surface modification for bearing seal |
| 05/26/2011 | WO2011019647A3 Methods of forming polycrystalline diamond cutting elements, cutting elements, and earth boring tools carrying cutting elements |
| 05/26/2011 | WO2011017649A3 Polycrystalline compacts including in-situ nucleated grains earth-boring tools including such compacts, and methods of forming such compacts and tools |
| 05/26/2011 | WO2011017592A3 Diamond transition layer construction with improved thickness ratio |
| 05/26/2011 | WO2011011198A3 Roller cone drill bit with lubricant pressure relief mechanism and method |
| 05/26/2011 | WO2010127233A4 Casing bits, drilling assemblies, and methods for use in forming wellbores with expandable casing |
| 05/26/2011 | US20110120782 Polycrystalline diamond compact including a substrate having a raised interfacial surface bonded to a leached polycrystalline diamond table, and applications therefor |
| 05/26/2011 | US20110120781 High strength infiltrated matrix body using fine grain dispersions |
| 05/26/2011 | US20110120780 Method and Apparatus for a True Geometry, Durable Rotating Drill Bit |
| 05/26/2011 | US20110120777 Expandable downhole tool |
| 05/26/2011 | US20110120774 Drill Bit and Method for Inserting, Expanding, Collapsing, and Retrieving Drill Bit |
| 05/26/2011 | US20110120725 Wellbore instruments using magnetic motion converters |
| 05/26/2011 | CA2777356A1 Down-the-hole drill hammer having a reverse exhaust system and segmented chuck assembly |
| 05/25/2011 | EP2324185A2 Passive and active up-drill features on fixed cutter earth-boring tools and related methods |
| 05/25/2011 | EP2142750B1 Release device |
| 05/25/2011 | CN201843524U Full hydraulic reamer |
| 05/25/2011 | CN201843523U Bearing grease pressure constant roller bit |
| 05/25/2011 | CN201843522U Blockage preventive three-cone bit |
| 05/25/2011 | CN102076925A Threaded nozzle for a cutter bit |
| 05/25/2011 | CN102071878A Polycrystalline diamond compact |
| 05/25/2011 | CN102071877A Polycrystalline diamond compact |
| 05/25/2011 | CN102071876A Multistage reducing combined drilling tool |
| 05/25/2011 | CN101225736B Hydraulic double-acting drilling reamer |
| 05/25/2011 | CN101215955B Positive cycle and reverse circulation dual-purpose three teeth roller bit |
| 05/24/2011 | US7946363 Thermally stable polycrystalline diamond cutting elements and bits incorporating the same |
| 05/24/2011 | US7946362 Matrix drill bits with back raked cutting elements |
| 05/24/2011 | US7946355 Auger assembly |
| 05/24/2011 | CA2538807C Cutter for maintaining edge sharpness |
| 05/19/2011 | WO2011058532A2 Super-hard cutter inserts and tools |
| 05/19/2011 | WO2011022421A3 Cutting elements having different interstitial materials in multi-layer diamond tables, earth-boring tools including such cutting elements, and methods of forming same |
| 05/19/2011 | WO2011022372A3 Improved non-planar interface construction |
| 05/19/2011 | WO2011019981A3 Roller cone disk with shaped compacts |
| 05/19/2011 | WO2011017673A3 Thermally stable polycrystalline diamond constructions |
| 05/19/2011 | WO2011017411A3 Drill bit with an adjustable steering device |
| 05/19/2011 | WO2010141575A4 Methods systems and compositions for manufacturing downhole tools and downhole tool parts |
| 05/19/2011 | WO2010021802A3 Earth-boring bits and other parts including cemented carbide |
| 05/19/2011 | US20110114394 Matrix tool bodies with erosion resistant and/or wear resistant matrix materials |
| 05/19/2011 | US20110114393 Super-hard cutter inserts and tools |
| 05/19/2011 | US20110114392 Drilling apparatus with reduced exposure of cutters and methods of drilling |
| 05/18/2011 | EP2322753A2 Expandable reamers for earth boring applications |
| 05/18/2011 | CN201835753U Polycrystalline diamond compact for rock-breaking tool for drilling |
| 05/18/2011 | CN201835752U Wheel type drill for breaking rocks in cutting mode |
| 05/18/2011 | CN201835751U Drill bit of gauge protection air hammer |
| 05/18/2011 | CN201835750U Tower-type anti-punching drill bit |
| 05/18/2011 | CN201835749U Hydraulic power rotating stuck-freeing drill bit |
| 05/18/2011 | CN102061887A Tooth placement drill bit formed by mixing hard alloy teeth with polycrystalline diamond clad sheets |
| 05/18/2011 | CN102061886A Drill bit |
| 05/18/2011 | CN102061885A Hollow drill of dead-soft coal bed zone casing |
| 05/18/2011 | CN102061884A Pile-driving machinery and drilling bucket thereof |
| 05/18/2011 | CN101624910B Method for reinforcing concealed tunnel |
| 05/18/2011 | CN101111659B Roller reamer |
| 05/17/2011 | US7942219 Polycrystalline diamond constructions having improved thermal stability |
| 05/17/2011 | US7942218 Cutting element apparatuses and drill bits so equipped |
| 05/17/2011 | US7942217 Cutting apparatus for a microtunnelling system |
| 05/12/2011 | WO2011057303A2 Drill bit with recessed center |
| 05/12/2011 | WO2011056162A2 A multifunctional screw drill and reaming device |
| 05/12/2011 | WO2011020111A3 Diamond impregnated bit with aggressive face profile |
| 05/12/2011 | WO2011017642A3 Anti-tracking spear-points for earth-boring drill bits |
| 05/12/2011 | WO2011017625A3 Method of forming a thermally stable diamond cutting element |
| 05/12/2011 | WO2011017590A3 Polycrystalline diamond material with high toughness and high wear resistance |
| 05/12/2011 | WO2011017582A3 Functionally graded polycrystalline diamond insert |
| 05/12/2011 | WO2011017451A3 Earth-boring tools and components thereof including erosion-resistant extensions, and methods of forming such tools and components |
| 05/12/2011 | WO2011017376A3 Superabrasive cutters with grooves on the cutting face and drill bits and drilling tools so equipped |
| 05/12/2011 | US20110108326 Drill Bit With Recessed Center |
| 05/12/2011 | DE112009001398T5 Gewindedüse für einen Schneidmeißel Threaded nozzle for a cutting chisel |
| 05/11/2011 | EP2320023A1 Method and device for expanding a pilot borehole in soil |
| 05/11/2011 | EP2318640A1 Core drill bit |
| 05/11/2011 | EP2318639A1 Drill bit having functional articulation to drill boreholes in earth formations in all directions |
| 05/11/2011 | EP2318638A2 Bit cone with hardfaced nose |
| 05/11/2011 | EP2318637A2 Dynamically stable hybrid drill bit |
| 05/11/2011 | CN201826758U Composite drill bit with high efficiency and high strength |
| 05/11/2011 | CN201826757U Surface layer polycrystalline diamond compact bit suitable for drilling stratum containing ocean holes |
| 05/11/2011 | CN201826756U Single-bottom double-door cutting-tooth bit |
| 05/11/2011 | CN201826755U Drilling tool |
| 05/11/2011 | CN201826754U Roller bit metal floating sealing device |
| 05/11/2011 | CN201826753U Steel-tooth tricone bit |
| 05/11/2011 | CN201826752U Spherical-tooth and wedge-tooth hob inner core bag structure |
| 05/11/2011 | CN201826751U Cement drill bit |
| 05/11/2011 | CN102052058A Method for producing novel high-grade rock drilling diamond compound tooth |
| 05/11/2011 | CN101182756B Bearing sealing structure for rotary drill bit |
| 05/10/2011 | US7938205 Boring head method and boring head for a ground boring device |
| 05/10/2011 | US7938204 Reamer with improved hydraulics for use in a wellbore |
| 05/10/2011 | US7938203 Downhole centrifugal drilling fluid separator |
| 05/10/2011 | US7938198 Rotary digging and compression enlarging driller and boring method |
| 05/10/2011 | CA2536695C Methods for designing fixed cutter bits and bits made using such methods |
| 05/06/2011 | CA2741617A1 Self-stabilized and anti-whirl drill bits and bottom-hole assemblies and systems for using the same |
| 05/05/2011 | WO2011017607A3 Highly wear resistant diamond insert with improved transition structure |
| 05/05/2011 | WO2011008680A3 Stabilizer subs for use with expandable reamer apparatus, expandable reamer apparatus including stabilizer subs and related methods |
| 05/05/2011 | WO2011005774A3 Backup cutting elements on non-concentric reaming tools |